Objects are moved after reopening the file
Don't use Object or Edit mode transformation tools.
For adjusting elements after you release it under Create tab &gt; Archipack ... use Archipack Tab to manipulate and adjust elements.

Also check some tutorials ... you don't have to create each wall as separate object.
https://www.youtube.com/watch?v=8qJHGig67_0
The best point to start https://github.com/s-leger/archipack/wiki one of the links is Documentation.